Principal Software Development Engineer in Test

Mansfield, MA (1-2 days a week in office) · US · USD 150,000-175,000 · 8-15 years experience · Remote · Posted Oct 19, 2026

At a glance

The Principal SDET will be a core member of the eClinical Solutions R&D Team, primarily responsible for architecting and evolving automation frameworks and infrastructure.
This role involves providing technical leadership, mentoring engineers, reviewing automation code quality, driving automation strategy, and ensuring scalable and maintainable test automation solutions across the organization.
The Principal SDET will also drive the initiative of migrating existing tests and infrastructure onto a new testing platform while collaborating closely with development, DevOps, architecture, and QA teams.

Design, develop, and maintain scalable enterprise-level test automation frameworks from scratch.
Lead framework and infrastructure evolution initiatives as part of the global SQA automation team.
Drive migration initiatives for existing automation frameworks, test suites, and infrastructure onto modern testing platforms.
Provide technical leadership and mentorship to automation engineers and SDET teams.
Drive Shift-Left testing practices by integrating automated quality validation early in the software development lifecycle.
Design, build, and maintain ephemeral test environments for scalable and isolated automated testing workflows.
Review and audit automation code for quality, maintainability, performance, and adherence to coding standards.
Design and implement parallel and distributed test execution capabilities.
Contribute to CI/CD pipeline implementation and continuous testing strategies.
Create and maintain technical documentation, standards, architecture diagrams, and Confluence documentation.

BE in Computer Science and/or equivalent.
Excellent written and verbal communication skills in English.
8–15 years of hands-on experience in software development engineering in test (SDET), automation engineering, or quality engineering.
Strong experience designing enterprise automation frameworks and scalable automation infrastructure.
Strong understanding of QA concepts, software testing methodologies, automation tools, and modern engineering practices.
Strong programming expertise in C#/.NET and object-oriented programming (OOP) concepts.
Strong understanding of SQL and database validation techniques.
Hands-on experience with Docker containers and containerized execution environments.
Expertise in Playwright (PW) automation including framework design, tooling, infrastructure, and parallel execution.
Strong experience in API automation testing using REST services and service-layer validation.